Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d702392ae33431…

MALICIOUS

PDF

75.8 KB Created: 2021-04-09 01:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3bbf7032c85bff76fe0f9e071720c09d SHA-1: ee69c420dd8e83e8986dfc0dda6a3e4df5279086 SHA-256: 47d702392ae3343129f1c2a31458d1abe8d4e5386bf1effcdeef1b78f6d36e39
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malicious redirection attempt. The document body, though heavily obfuscated, contains text related to pairing Bluetooth devices, likely a lure to attract victims. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xezojetit.ru/strik?utm_term=how+to+pair+jvc+bluetooth PDF link annotation
    • http://rabuvuz.22web.org/french_verbs_conjugation_quiz.pdfIn PDF document text
    • http://lovojat.22web.org/what_is_one_major_effect_of_climate_change_on_food_production.pdfIn PDF document text
    • http://topfrag.rip/schedule_d_2017_tax_worksheetp68yt.pdfIn PDF document text
    • http://lngcliente.com/17262858573r4mpv.pdfIn PDF document text
    • http://dosodowonuraf.iblogger.org/buda_sua_vida_e_seus_ensinamentos_osho.pdfIn PDF document text
    • http://visobewitumimek.22web.org/el_sistema_bethesda_para_informar_la_citologa_cervical_descargar.pdfIn PDF document text
    • http://kindraretterath.com/desert_worms_brick_rigsobzte.pdfIn PDF document text
    • http://pro-komp-master.website/countif_greater_than_google_sheets5x0s1.pdfIn PDF document text
    • http://imedo.ru/vejusimekelejufev4u5yn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zazozipuse.rf.gd/calculus_based_physics_2_problems_and_solutions.pdfIn PDF document text
    • http://kofuzedu.epizy.com/firumonaxisiladaloxiwo.pdfIn PDF document text
    • http://bozawozu.epizy.com/55899025947.pdfIn PDF document text
    • http://bisumige.epizy.com/gewubofokawasefe.pdfIn PDF document text
    • http://bezegorev.epizy.com/61827071675.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/wejapusolimasemarepu.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/directory_commands_in_linux.pdfIn PDF document text
    • http://jezawirigi.epizy.com/video_song_maker_pc.pdfIn PDF document text
    • http://rovunebezub.epizy.com/91907937305.pdfIn PDF document text
    • http://mebezoworo.rf.gd/adawat_novel_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/bukefomaluxag.pdfIn PDF document text
    • http://punifaz.epizy.com/83740036067.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/cpr_erc_guidelines_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/half_face_masquerade_mask_template.pdfIn PDF document text
    • https://83f018a0-8e49-44f0-b57e-805e464a5f06.filesusr.com/ugd/10a4aa_79d4c09dd4c44216bc0dd28234c55062.pdf?index=trueIn PDF document text
    • https://4ef57e19-9a2e-4e6f-a444-f6b59f982a39.filesusr.com/ugd/4c1554_0817b3808f44425aa0fc70be9fa12feb.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDF 5172 bytes
SHA-256: 7a4d4db5679615403e8c91e07d2fee4b0256545027378c65bef2f259fe7ee765
font_01_sfnt_off0000fd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD82 10660 bytes
SHA-256: 3a762709c2030c3f563e497390619e68763f0f5955f00c01095bc1d1992fb406

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